then heat oil in a pan and add mustard seeds, after fry it add ginger, garlic, onion and fry it for golden brown color. next add cardamom, cinnamon, curry leaves and mix well. then add tomato curry powder, chilli powder, pepper powder, turmeric powder and fry about 1 minutes under low fire. then add coconut milk and olives and mix well and cook for 5 minutes and low fire and add salt to taste.